Mine began when I was 19. It was related to panic disorder, and manifested itself into being afraid of food. Also grew up with a parent who was into appearance, and worrying what others thought of us all (seems to be common among sufferers) and definitely feeling like I had control in a world of chaos (therapy has later taught me this).
I came out of it when I was about 21 or 22. in 2011, it popped back up after I went on a diet to lose weight, legitimately, I was quite heavy and unhealthy. I started out eating healthy, but ended up starving myself because I couldn't seem to lose enough. Eventually, I started ignoring hunger signals. I lost 50 pounds, which was my goal, but now deny myself food to the point of having little interest in eating. It's now just a way to keep me from passing out. Working on this though.
(hug) Thanks for starting this thread.